This could be a world class, elephant size deposit of PGM's.
Be sure to look at the maps. Can play this with RCW.v, ATG.v or SLR.t. SLR.t is about to swallow ATG.v 3 for 1.
ROCKWELL RECEIVES EXCEPTIONAL PGM RESULTS FROM PEDRA BRANCA
Good map in the news release at the site below.
http://www.altoro.com/s/default.asp
Altoro receives PGM results from Pedra Branca
Altoro Gold Corp ATG
Shares issued 17,047,782 Oct 4 close $0.37
Thu 5 Oct 2000 News Release
Also Solitario Resources Corp (SLR)
Mr. Rene Carrier of Rockwell Ventures reports
A very successful surface exploration program for platinum group metals
(PGM) has recently been completed on the Pedra Branca property. The
42,000-hectare property is located in northeastern Brazil. The exploration
potential, geological continuity and assay results from the initial program
are highly encouraging.
Rockwell has the right to earn an initial 60-per-cent interest in the
property from Altoro Gold Corp. by spending $7.0-million (U.S.) over a
four-year period. Details of the acquisition were provided in Stockwatch
July 24, 2000. Currently, Altoro and Solitario Resources Corporation are
completing a plan of arrangement whereby Altoro will become a 100-per-cent
subsidiary of Solitario.
Geological mapping by Rockwell has demonstrated that the property is
underlain by the 100-metre-thick basal portion of a folded, layered mafic
intrusive complex. This zone extends 15 kilometres to 20 kilometres across
the limbs of a major regional synform, and contains one or more PGM-bearing
chromitite layers. The prospective horizon extends 70 kilometres along the
trace of the fold. These dimensions suggest that the Pedra Branca property
may host an entire mining district.
Ten PGM-bearing chromitite occurrences over a 45-kilometre strike length of
the complex were documented and sampled during the initial exploration
program. Each occurrence hosts massive chromitite layer(s) one metre or
more thick, containing very significant platinum, palladium, rhodium and
gold (PGM) values. A total of 226 grab samples of chromitite was collected
at surface from the 10 occurrences to establish the general grade tenor.
One hundred ninety-one of these (denoted SG in the attached table) were
composite samples, comprising small pieces of material collected over a
10-metre interval from outcrops and boulder trains. Samples returned up to
42.5 grams per tonne combined PGM (plus) gold and averaged 7.5 g/t for all
samples. Of the 226 samples collected, 120 returned greater than 5.0 g/t;
54 returned greater than 10.0 g/t and 18 returned greater than 20.0 g/t.
Individual platinum (Pt), palladium (Pd), rhodium (Rh) and gold (Au) values
for samples grading greater than five g/t combined PGM are listed in the
attached table. As mapping and prospecting progresses, it is anticipated
that many other similar occurrences will be discovered.
The chromitite layers are part of a large-scale, northeasterly plunging
synform. The scale of the structure indicates the potential to host
numerous deposits. Much of Rockwell's work was focused on the historic
Esbarro occurrence. Numerous trenches and approximately 50 short, closely
spaced drill holes have been completed by previous operators over a
1,000-metre by 200-metre area at Esbarro. Geological mapping by Rockwell
has shown that the Esbarro occurs along a nine-kilometre folded strike
length in the core of the regional synform. The exposure of the layered
intrusion and associated chromitites in this area demonstrates the
continuity of the mineralized layer(s) within the complex. The Esbarro area
is a high priority target, with potential for a significant open pit
resource.
The style, widths and grades of mineralization at Pedra Branca are
reminiscent of the UG-2 chromitite horizon in South Africa's Bushveld
complex. However, the gentle dips of the fold limbs and shallow depths of
exposure of the Pedra Branca complex offer better potential for the
discovery of open pittable PGM deposits.
A two-phase exploration program is planned for Pedra Branca, beginning this
fall. The $2-million first phase would include property-wide airborne
magnetic surveys, reconnaissance and detailed geological mapping, soil and
rock chip geochemical surveys, and diamond drilling. A phased long-term
second stage exploration program, comprising drilling at Esbarro and
initial drill testing of prioritized known targets and newly defined
targets is also planned. It is estimated that the second phase expenditures
would be $8-million.
Pedra Branca Project
Table of Surface Rock Sample Results
(greater than) 5.0 g/tonne PGM (plus) Au
PGM
(plus)
Au Pt Pd Rh Au
Sample (g/t) (g/t) (g/t) (g/t) (g/t)
Conceicao
103-094 7.68 3.19 4.09 0.367 0.045
103-137A 6.35 3.81 2.19 0.315 0.038
103-145A 5.05 2.95 1.78 0.287 0.037
103-146B 5.77 2.09 3.63 0.026 0.029
Curiu
113-
129B-1 13.81 8.09 5.02 0.331 0.375
113-
129B-2 10.83 6.69 3.72 0.261 0.164
113-135 7.98 4.16 3.61 0.157 0.055
113-686 17.85 6.56 10.59 0.260 0.439
SG-1113 6.48 4.35 1.89 0.135 0.103
SG-1114 6.47 4.27 2.00 0.137 0.058
SG-1115 6.43 4.39 1.84 0.121 0.075
SG-1116 7.19 4.66 2.30 0.134 0.099
SG-1117 5.83 4.05 1.57 0.139 0.077
SG-1118 8.82 6.02 2.59 0.157 0.060
SG-1173 7.81 4.67 2.70 0.071 0.369
SG-1174 8.74 5.33 3.01 0.156 0.245
SG-1175 5.97 4.40 1.22 0.172 0.175
SG-1176 7.27 4.52 2.42 0.184 0.155
SG-1177 11.04 5.63 5.01 0.216 0.189
SG-1178 10.22 5.82 4.07 0.209 0.119
SG-1179 11.90 5.23 6.31 0.098 0.265
SG-1180 14.80 5.76 8.55 0.153 0.338
Esbarro
113-169 21.82 12.17 9.38 0.088 0.178
113-170 6.92 4.28 2.29 0.345 0.005
113-173C 16.74 9.85 6.76 0.052 0.080
113-182 8.15 3.83 3.86 0.446 0.013
113-228C 6.33 4.59 1.19 0.533 0.008
113-635 5.17 2.48 2.62 0.041 0.030
SG-1105 5.30 2.63 2.44 0.210 0.015
SG-1106 14.28 5.97 7.89 0.355 0.066
SG-1107 7.21 3.52 3.45 0.201 0.036
SG-1111 7.84 4.44 2.99 0.362 0.048
SG-1112 14.09 5.79 7.82 0.407 0.074
SG-1119 13.76 10.66 2.96 0.082 0.055
SG-1120 24.22 17.76 6.21 0.154 0.092
SG-1121 18.68 13.51 4.94 0.189 0.047
SG-1122 21.52 16.32 5.04 0.112 0.047
SG-1123 16.89 12.10 4.61 0.095 0.076
SG-1124 18.65 12.89 5.58 0.080 0.092
SG-1125 20.70 13.41 7.06 0.098 0.132
SG-1126 23.70 16.53 6.96 0.100 0.104
SG-1130 5.89 4.34 1.31 0.228 0.012
SG-1132 10.88 7.41 3.14 0.304 0.026
SG-1136 11.05 7.45 3.40 0.132 0.063
SG-1138 18.79 12.51 6.10 0.077 0.104
SG-1139 23.25 12.51 10.49 0.066 0.188
SG-1140 12.61 5.42 6.91 0.176 0.111
SG-1141 6.71 2.74 3.77 0.188 0.017
SG-1142 8.80 4.18 4.36 0.227 0.026
SG-1143 6.26 3.54 2.52 0.181 0.024
SG-1145 6.52 3.46 2.86 0.185 0.013
SG-1151 5.66 3.39 2.02 0.242 0.011
SG-1157 8.86 3.95 4.65 0.214 0.047
SG-1158 10.23 3.93 6.04 0.208 0.053
SG-1161 23.56 8.11 14.98 0.376 0.087
SG-1162 5.14 2.40 2.55 0.175 0.021
SG-1164 10.24 4.19 5.83 0.192 0.029
SG-1165 5.55 2.48 2.94 0.113 0.019
SG-1166 9.14 2.99 5.94 0.161 0.044
SG-1167 6.82 2.19 4.42 0.191 0.020
SG-1169 12.26 5.88 6.14 0.200 0.039
Ipueiras
105-
038D-2 42.46 18.14 23.14 1.013 0.168
105-047 13.75 10.25 2.36 1.089 0.045
SG-1014 8.38 6.23 1.69 0.424 0.034
SG-1015 10.34 6.20 3.51 0.586 0.054
SG-1017 5.67 3.81 1.43 0.412 0.020
SG-1018 6.23 4.06 1.80 0.341 0.033
SG-1019 5.90 3.84 1.53 0.501 0.023
SG-1020 7.81 5.11 2.06 0.596 0.043
SG-1021 6.30 4.10 1.70 0.456 0.045
SG-1022 11.00 7.20 3.14 0.602 0.056
SG-1023 6.77 4.49 1.75 0.476 0.050
SG-1024 8.87 6.08 2.13 0.609 0.051
SG-1025 8.20 4.79 2.81 0.553 0.052
SG-1026 7.85 4.14 3.13 0.539 0.040
SG-1029 5.45 3.57 1.40 0.467 0.021
SG-1030 9.52 7.05 1.75 0.684 0.034
SG-1031 5.18 2.86 1.86 0.444 0.015
Massape
SG-1080 10.83 4.27 6.39 0.127 0.050
SG-1083 6.83 2.10 4.40 0.268 0.059
SG-1085 5.30 2.17 2.80 0.297 0.036
Mendes
SG-1189 5.58 2.91 2.60 0.036 0.025
SG-1190 7.49 1.96 5.45 0.041 0.043
Morado Nova
104-
096B-1 6.49 4.45 1.52 0.505 0.017
SG-1001 15.78 7.79 7.34 0.594 0.050
SG-1002 8.00 4.98 2.57 0.427 0.023
SG-1003 7.53 5.34 1.66 0.516 0.010
SG-1004 10.51 7.12 2.93 0.435 0.029
SG-1005 8.81 4.85 3.60 0.343 0.020
SG-1006 6.23 3.86 2.19 0.155 0.025
SG-1007 33.14 16.42 15.94 0.709 0.066
SG-1008 15.24 7.07 7.67 0.458 0.047
SG-1009 8.30 5.56 2.71 0.005 0.021
Pitombeira
SG-1055 19.56 12.65 6.18 0.686 0.049
Trapia 1
SG-1059 5.52 3.67 1.53 0.308 0.017
SG-1060 5.95 2.63 3.06 0.234 0.030
SG-1061 8.65 2.80 5.52 0.288 0.044
SG-1062 7.35 2.73 4.33 0.255 0.032
SG-1063 8.80 3.90 4.58 0.287 0.037
SG-1064 6.73 2.73 3.72 0.259 0.023
SG-1065 6.06 2.31 3.49 0.237 0.021
SG-1066 6.40 2.89 3.16 0.327 0.019
SG-1071 7.35 3.71 3.16 0.450 0.024
Trapia W
SG-1032 19.87 10.53 9.08 0.104 0.155
SG-1033 12.51 6.43 5.56 0.463 0.055
SG-1034 20.86 12.45 8.06 0.128 0.226
SG-1035 8.18 4.00 3.78 0.362 0.035
SG-1036 28.67 14.54 13.71 0.104 0.312
SG-1037 37.17 16.32 20.47 0.106 0.272
SG-1038 26.85 16.29 10.05 0.106 0.408
SG-1039 16.47 9.93 6.22 0.103 0.217
SG-1040 14.26 5.98 7.84 0.107 0.332
SG-1041 25.74 12.27 13.13 0.105 0.230
SG-1042 27.73 15.43 12.00 0.079 0.221
SG-1043 22.25 11.14 10.80 0.078 0.230
SG-1044 18.57 11.35 6.96 0.104 0.156
SG-1045 19.04 9.20 9.54 0.077 0.226
SG-1046 20.48 8.68 11.52 0.078 0.201
SG-1047 22.05 12.00 9.79 0.078 0.182
SG-1048 19.30 10.11 8.89 0.079 0.223
Mark Rebagliati, PEng, chief exploration manager and consultant to
Rockwell, is supervising the exploration and analytical quality
assurance/quality control programs. The rock samples were transported from
the property by truck for sample preparation, including drying, crushing
and pulverization, at Bondar Clegg Brasil Ltda., Luziania, Goias, Brazil.
The resulting pulps were shipped by air freight to Canada for analysis by
Bondar Clegg Canada Limited, North Vancouver, B.C. The analytical method
for determination of platinum (Pt), palladium (Pd) and gold (Au) was by one
assay ton (AT) fire assay (FA) fusion with lead as a collector and an
inductively coupled plasma atomic emission spectroscopy (ICP-AES) finish.
Samples with high chromium or sulphide content were analyzed by the same
method with a one-half AT fusion. Results were reported in parts per
billion (ppb). Samples which returned values of Pt(plus)Pd(plus)Au (greater
than) 2,000 ppb were analyzed for rhodium (Rh) by a separate one AT FA
fusion with ICP-AES finish, results reported in ppb. Results for 26 Pt and
12 Pd analyses returned greater than 10,000 ppb, and these were reanalyzed
by FA fusion with an atomic absorption spectroscopy finish.
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